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Storm Glass Marine Weather vs Weatherstack

Same instrument, two spec sheets — measured, not claimed.

APIStorm Glass Marine WeatherNEW—WeatherstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Storm Glass Marine Weather vs Weatherstack: common questions

Which is more reliable, Storm Glass Marine Weather or Weatherstack?

On our scheduled checks, Weatherstack leads on measured uptime — Storm Glass Marine Weather at —% versus Weatherstack at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Storm Glass Marine Weather and Weatherstack need an API key?

Both ask you to authenticate — Storm Glass Marine Weather uses an API key and Weatherstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Storm Glass Marine Weather and Weatherstack from the browser?

Only Storm Glass Marine Weather is browser-friendly — it returns CORS headers over HTTPS. Weatherstack needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Storm Glass Marine Weather and Weatherstack free for commercial use?

Storm Glass Marine Weather has unclear commercial terms, and Weatherstack has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.